I finnished the game twice, and gott all medals. The seceret easter eggs are...
*SPOILER*
1. Dont shoot Hans
2.On Teatowel Hassan (terrorist), click his hat, click no and then yes
3. on wako's weapon choice, click around in the bottom left quater, u get the award and his name changes to 'Wa*ko'
4. Click on another link, DONT replay
Also, do every fight twice, so you use all weapons
Great game XD